Abstract
A study of the energies of the first excited states in all even-even nuclei reveals an anomalous behavior in some nuclei with . We analyze these irregularities in the framework of the shell model. It is shown that proton-neutron correlations play an important role in this phenomenon.
- Received 8 July 2004
DOI:https://doi.org/10.1103/PhysRevC.71.014319
©2005 American Physical Society